tables > 1 gig

Config.h has this.  Does this need to be updated because we can't vacuum
multi-segment relations?  I have changed it to 7F000000:

/** RELSEG_SIZE is the maximum number of blocks allowed in one disk file.* Thus, the maximum size of a single file is
RELSEG_SIZE* BLCKSZ;* relations bigger than that are divided into multiple files.** CAUTION: RELSEG_SIZE * BLCKSZ must
beless than your OS' limit on file* size.  This is typically 2Gb or 4Gb in a 32-bit operating system.  By* default, we
makethe limit 1Gb to avoid any possible integer-overflow* problems within the OS.  A limit smaller than necessary only
meanswe* divide a large relation into more chunks than necessary, so it seems* best to err in the direction of a small
limit. (Besides, a power-of-2* value saves a few cycles in md.c.)** CAUTION: you had best do an initdb if you change
eitherBLCKSZ or* RELSEG_SIZE.*/
 
#define RELSEG_SIZE (0x40000000 / BLCKSZ)


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